PLANT ECOLOGY-ASSIGNMENT

1	Long and linear leaves are seen in Potamogeton Vallisneria Eichhornia Trapa Ans:Potamogeton
2	Eichhornia has i) Spongy stem ii) Spongy petiole iii) Balancing roots i is correct i and ii are correct i and iii are correct i, ii and iii are correct Ans:i, ii and iii are correct
3	Leaves of these hydrophytes are relatively larger Rooted hydrophytes with floating leaves Amphibious plants Free floating hydrophytes Submerged rooted hydrophytes Ans:Rooted hydrophytes with floating leaves
4	Assertion : Respirating roots of Jussiaea are adventitious. Reason : Hydrophytes usually have adventitious roots. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true and R is the correct explanation of A
5	Assimilatory epidermis is present in Vallisnaria Asparagus Zizyphus Calotropis Ans:Vallisnaria
6	Relatively wider cortex is seen in the roots of Asparagus Amnophila Aloe Acacia Ans:Asparagus
7	Sclerenchymatous hypodermis is seen in the leaves of Nerium Casuarina Pinus Ceiba Ans:Pinus
8	Identify the plant whose leaf is extended throughout the depth of waterbody Nelumbo Pistia Hydrilla Limnophila Ans:Nelumbo
9	Assertion : Sagittara has poorly developed xylem. Reason : Hydrophytes grow in water rich conditions. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true and R is the correct explanation of A
10	Assertion : Nymphaea is a hydrophyte. Reason : It has astrosclereids. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true but R is not the correct explanation of A
11	Study the following Identify the two correct items ii and iv iii and iv i and ii i and iii Ans:i and ii
12	Sub-aerial modified stems have no contact with the soil in Agave Nymphaea Eichhornia Hydrilla Ans:Eichhornia
13	Hydrochory is shown by Nelumbo Nymphaea Vallisneria Lemna Ans:Nymphaea
14	Sagittaria shows i) Heterophylly ii) Stoloniferous stem iii) Hydrophily i and ii ii and iii only i i and iii Ans:i and ii
15	Both aerial and underwater roots are seen in Pistia Victoria Jussiaea Ceratophyllum Ans:Jussiaea
16	Match the following and identify the correct match A. Plant having contact with only water I) Ranunculus B. Plant always having contact with both water and soil only II) Ceratophyllum C. Plant always having contact with air and water III) Cyperus D. Plant always having contact with air water and soil IV) Salvinia V) Potamogeton A-II, B-V, C-IV, D-I A-II, B-V, C-III, D-I A-II, B-IV, C-I, D-V A-V, B-II, C-IV, D-III Ans:A-II, B-V, C-IV, D-I
17	The following plant has relatively more developed xylem Trapa Typha Wolffia Utricularia Ans:Typha
18	The hydrophyte with developed root caps is Azolla Lemna Hydrilla Cyperus Ans:Cyperus
19	All leaves of the plant are dissected and root like in Limnophila Sagittaria Vallisneria Ceratophyllum Ans:Ceratophyllum
20	Odum defined ecology as Study of organisms with respect to environment Study of ecosystems Study of reciprocal relationships between plants and animals Study of various species of plants Ans:Study of ecosystems
21	This plant has contact with neither atmosphere nor soil Salvinia Utricularia Typha Trapa Ans:Utricularia
22	Assertion : Pistia has root pocket. Reason : All hydrophytes lack root caps. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
23	Choose the correct statement All hydrophytes have root system All hydrophytes lack root caps All hydrophytes lack cuticle All hydrophytes have aerenchyma Ans:All hydrophytes have aerenchyma
24	Study the following Identify the two correct items i and ii ii and iii iii and iv ii and iv Ans:iii and iv
25	This hydrophyte can effectively survive for some time in dry period Pistia Hydrilla Cyperus Lemna Ans:Cyperus
26	Match the following A. Hydrilla I) Bulbs B. Nymphaea II) Rhizome C. Aloe III) Bulbils D. Agave IV) Fragmentation V) Suckers A - IV, B - II, C - V, D - I A - IV, B - II, C - V, D - III A - II, B - IV, C - V, D - III A - II, B - III, C - IV, D - V Ans:A - IV, B - II, C - V, D - III
27	Stem doesn’t store water in Opuntia Euphorbia Bulbophyllum Casuarina Ans:Casuarina
28	Arrange the following hydrophytic plants in a sequence of plants ‘having contact with soil and water’, ‘with only water’, ‘with water and atmosphere’ and ‘with water’ and ‘soil and atmosphere’ i) Ceratophyllum ii) Sagittaria iii) Eichhornia iv) Potamogeton iv, i, iii, ii iv, iii, i, ii i, iv, iii, ii iv, i, ii, iii Ans:iv, i, iii, ii
29	Assertion : Tribulus usually grows in Arid zones. Reason : Xerophytes can grow only in water scarcity conditions. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
30	Assertion : Well developed root cap is seen in Cyperus. Reason : It is an amphibious plant. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true and R is the correct explanation of A
31	Leaves of Potamogeton are Ribbon shaped Needle like Linear Lanceolate Ans:Linear
32	Match the following A. Rootless hydrophyte I) Cyperus B. Hydrophyte with horizontally growing stem II) Nelumbo C. Epistomatous plant III) Ranunculus D. Hydrophyte surviving in dry periods IV) Wolffia V) Azolla A - IV, B - V, C - II, D - III A - IV, B - V, C - II, D - I A - V, B - IV, C - I, D - II A - IV, B - III, C - I, D - II Ans:A - IV, B - V, C - II, D - I
33	Assertion : Eichhornia root shows polyarch and exarch condition. Reason : It is a hydrophyte. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true but R is not the correct explanation of A
34	Succulent xerophyte with epidermal cells storing water is Aloe Bryophyllum Peperomia Opuntia Ans:Peperomia
35	Leaves are not transluscent in Vallisneria Hydrilla Pistia Potamogeton Ans:Pistia
36	Study the following Identify the two correct items i and ii i and iv iii and iv ii and iii Ans:i and iv
37	Hydrophyte with some aerial and with some underwater leaves Eichhornia Potamogeton Vallisneria Salvinia Ans:Salvinia
38	Assertion : Tribulus shows mesophytic characters. Reason : It never faces water deficient conditions. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true and R is the correct explanation of A
39	Match the following and identify the correct match A. Leaves with multilayered sclerenchymatous hypodermis I)Tribulus B. Leaves with multiple epidermis II)Aloe C. Stems with multilayered sclerenchymatous hypodermis III)Nerium D. Leaves with mucilaginous mesophyll IV)Pinus V)Casuarina A-V, B-IV, C-II, D-I A-IV, B-V, C-I, D-II A-IV, B-III, C-V, D-II A-IV, B-III, C-II, D-I Ans:A-IV, B-III, C-V, D-II